1.To exert muscular strength; to exert one's strength with painful effort, particularly in servile occupations; to work; to toil. "Adam, well may we labor still to dress This garden."
2.To exert one's powers of mind in the prosecution of any design; to strive; to take pains.
3.To be oppressed with difficulties or disease; to do one's work under conditions which make it especially hard, wearisome; to move slowly, as against opposition, or under a burden; to be burdened; often with under, and formerly with of. "The stone that labors up the hill." "The line too labors, and the words move slow." "To cure the disorder under which he labored." "Come unto me, all ye that labor and are heavy laden, and I will give you rest."
4.To be in travail; to suffer the pangs of childbirth; to be in labor.
5.(Naut.) To pitch or roll heavily, as a ship in a turbulent sea.
...
